[iamthecheese]

I was planning on ordering this switched from glassware: http://glass-ware.stores.yahoo.net/acswitch.html for my upcoming EHHA build, to turn the heaters on before the rest of the amp, and decided to look around more on their site.
 
http://glass-ware.stores.yahoo.net/netcjstat.html, their stepped attenuators caught my eye, firstly being theyre fairly cheap(~40 bucks), and second their designed of a rough adjustment and then fine adjustment knobs.
 
I was wondering if anyone had an opinion on one, and if they are worth checking out, for an amp would 100k or 20k resistance be better, since the EHHA kits from glass jar include a 50K pot. Also, is there a difference between carbon film vs metal film resistors in an application like this?
 
Thanks!

 

[iamthecheese]

bump...or would something like this from ebay be better:http://cgi.ebay.com/Dale-23-Step-Attenuator-Volume-Control-Log100k-Stereo-/220766369566?_trksid=p5197.m263&_trkparms=algo%3DSIC%26itu%3DUCI%252BIA%252BUA%252BFICS%252BUFI%252BDDSIC%26otn%3D10%26pmod%3D120715634921%252B320721340850%252B120715642223%26po%3DLVI%26ps%3D63%26clkid%3D1231553896952875183
 
edit: except the 50k one

 

[jdkJake]

Are you looking at the stereo or going with a dual-mono version?

I would aim for lower impedance rather than higher, but, then again, it really depends on your source. What are you using to drive it?

 

[iamthecheese]

Quote:

Are you looking at the stereo or going with a dual-mono version?

I would aim for lower impedance rather than higher, but, then again, it really depends on your source. What are you using to drive it?

Opus with ballsie is under construction, but If I get a normal stepped attenuator it would be stereo like the one I linked too, I guess if the glassware ones are any good they have a rough adjust stereo and a fine adjust mono for each channel.

 

[nullstring]

I plan on getting the very same stepped attenuation for my EHHA build.
 
They seem like they have a very nice performance:cost ratio.
Other stepped attenuation either seem to be inferior quality or way way more expensive.
 
I'll probably get two of them.. one with Dale resistors and one with boutique carbon resistors.

 

[iamthecheese]

Quote:

I plan on getting the very same stepped attenuation for my EHHA build.
 
They seem like they have a very nice performance:cost ratio.
Other stepped attenuation either seem to be inferior quality or way way more expensive.
 
I'll probably get two of them.. one with Dale resistors and one with boutique carbon resistors.

Would the 100k resistor set be better for the EHHA?
 
 

 

[jdkJake]

With the ballsie, I suspect a 10k impedance would be just fine.

The 50k is a nice, happy medium for most sources. No reason to introduce more noise by going with 100k. The EHHA will be fine with that value.

 

[Steve Eddy]

 
Personally I wouldn't touch anything from China being sold on eBay. And in spite of that, I wouldn't want to use anything with a D flat shaft on it.
 
I'd go with the TCJ attenuator, but not scrimp and get the upgraded version using the Elma switches. The Elmas are not only a better switch overall, but they feel wonderful. Not the stiff clunky steps you get with the cheap rotary switches.
 
se
 
 

 

[iamthecheese]

Quote:

With the ballsie, I suspect a 10k impedance would be just fine.

The 50k is a nice, happy medium for most sources. No reason to introduce more noise by going with 100k. The EHHA will be fine with that value.

So I assume 20K in this case?


Quote:

 
Personally I wouldn't touch anything from China being sold on eBay. And in spite of that, I wouldn't want to use anything with a D flat shaft on it.
 
I'd go with the TCJ attenuator, but not scrimp and get the upgraded version using the Elma switches. The Elmas are not only a better switch overall, but they feel wonderful. Not the stiff clunky steps you get with the cheap rotary switches.
 
se
 
 

I'd like to, but I can't justify 160 bucks on an attenuator for my build budget. I'm going with the glass jar kit for 280, and the rest  of 500 for casework and engraving
 

 

[Steve Eddy]

Quote:

I'd like to, but I can't justify 160 bucks on an attenuator for my build budget. I'm going with the glass jar kit for 280, and the rest  of 500 for casework and engraving
 

Okie doke.
 
Good luck with your project!
 
se
 
 
 

 

[iamthecheese]

Well I assembled my A3 attenuator today, and I got say I'm impressed with the quality of the pcb, I'd say twice as thick as most pcbs. It came with a nice little book. Assembly was easy and straightforward aswell, due to the labeling on the provided resistors.
 
Can't comment on the sound yet since the rest of my EHHA is still in transit.